FogDog via eBay offers the Century Double-Mantle Propane Lantern for $20.97 with free shipping. That's the lowest total price we could find by $7. This lantern features steel and glass globes and accommodates a 14.1-oz. or 16.4-oz. propane cylinder (not included).
Need a case? L.L.Bean has it bundled with a padded nylon case for $29.99 with free shipping. That's a low for the pair by $4.